/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.sqoop.connector.spi;

import org.apache.sqoop.model.MConnection;
import org.apache.sqoop.model.MConnectionForms;
import org.apache.sqoop.model.MJob;
import org.apache.sqoop.model.MJobForms;

public abstract class MetadataUpgrader {

  /**
   * Upgrade the original connection and fill into the upgradeTarget. Note
   * that any metadata already in {@code upgradeTarget} maybe overwritten.
   * @param original - original connection metadata as in the repository
   * @param upgradeTarget - the instance that will be filled in with the
   *                      upgraded metadata.
   */
  public abstract void upgrade(MConnectionForms original,
    MConnectionForms upgradeTarget);
  /**
   * Upgrade the original job and fill into the upgradeTarget. Note
   * that any metadata already in {@code upgradeTarget} maybe overwritten.
   * This method must be called only after the connection metadata has
   * already been upgraded.
   * @param original - original connection metadata as in the repository
   * @param upgradeTarget - the instance that will be filled in with the
   *                      upgraded metadata.
   */
  public abstract void upgrade(MJobForms original, MJobForms upgradeTarget);
}
